CN111093845A - Waste treatment plant for separating recycled components - Google Patents
Waste treatment plant for separating recycled components Download PDFInfo
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- CN111093845A CN111093845A CN201880059490.9A CN201880059490A CN111093845A CN 111093845 A CN111093845 A CN 111093845A CN 201880059490 A CN201880059490 A CN 201880059490A CN 111093845 A CN111093845 A CN 111093845A
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- waste
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- cylindrical body
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- 239000002699 waste material Substances 0.000 title claims abstract description 99
- 238000000926 separation method Methods 0.000 claims abstract description 29
- 230000004913 activation Effects 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 238000010790 dilution Methods 0.000 claims abstract description 9
- 239000012895 dilution Substances 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000005416 organic matter Substances 0.000 claims description 27
- 229920002678 cellulose Polymers 0.000 claims description 20
- 239000001913 cellulose Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 12
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000000123 paper Substances 0.000 description 12
- 239000010815 organic waste Substances 0.000 description 8
- 230000001174 ascending effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- -1 cans and jars Substances 0.000 description 2
- 239000011111 cardboard Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000021056 liquid food Nutrition 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000021055 solid food Nutrition 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/20—Stationary drums with moving interior agitators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
- B03B5/56—Drum classifiers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Centrifugal Separators (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Combined Means For Separation Of Solids (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
A waste treatment plant (1) for separating recycled components, comprising: a separation column (2), arranged substantially vertically, comprising: a cylindrical body (3) provided with a plurality of holes on its lateral surface and provided with an opening (5) below for supplying the waste to be treated; a blade shaft (4) rotated by activation of a first motor and positioned coaxially inside the cylindrical body (3); a first upper discharge outlet (6) arranged at the upper part of the cylindrical body (3) for discharging a first recycled component present in the waste to be treated, said first recycled component being separated and transported upwards by the blade shaft (4); a discharge group (7) for extracting the first recycled component; the discharge group (7) comprises a discharge duct (9) connected to the first upper discharge opening (6); a dilution group (8) positioned along the separation column (2) for supplying water or similar dilution liquid inside the cylindrical body (3); a second discharge opening arranged in a lower portion of the cylinder (3) for discharging a second recovery component. The discharge duct (9) and the screw (11) are arranged parallel to the tangential direction with respect to the cylinder (3) to facilitate the extraction of the first recycled component from the cylinder (3) to the discharge duct (9), the vane shaft (4) comprising a first rotor (40) and, near the upper end, at least one plate (45) fixed to the lateral surface of the first rotor (40) and arranged radially.
Description
Technical Field
The present invention relates to the technical field of waste treatment plants for separating recycled components. The waste products may come from separate garbage collections or industrial plants.
Recycled components refer to homogeneous or heterogeneous portions of waste products that can be sent out for recycling.
Background
It is known that the removal of waste materials is currently considered to be a very relevant problem, which may lead to complications related to environmental pollution.
In most industrialized countries, separate collection of waste, increasing practice and capillary-like phenomena make considerable contributions to the reduction of environmental pollution.
For example, in the case of the separate collection of municipal solid waste, the ultimate consumer of the various products has the primary choice of sending out separately, which is collected according to certain standard categories: plastics, glass, cans and jars, paper and cardboard, organic waste.
In the case of organic waste from separate collection, there are often unwanted objects such as, for example, paper packaging, cans, glass fragments, metal materials, plastic materials, etc., which are mixed together independently of the organic matter.
An apparatus (100) is known (shown in figures 1 to 4) for selecting organic matter from organic waste destined for recycling, particularly suitable for removing residues and objects unrelated to organic matter of agro-industrial origin, and for separating solid or liquid food products from respective packages made of cardboard or equivalent material, comprising:
a) a separation column (2) arranged substantially vertically, wherein a cylindrical body (3) is inserted, which is provided with a plurality of holes on the lateral surface and inside which a blade shaft (4) is coaxially positioned and rotated by activation of a first motor, an opening (5) being provided below the cylindrical body (3) for supplying the organic waste to be treated.
b) An upper discharge port (6) disposed at an upper portion of the cylinder (3) for discharging organic matter-independent residues or objects to be treated, which are separated and transported upward through the blade shaft (4);
c) a discharge group (7) for extracting the above-mentioned residues or objects, not related to the organic matter present in the organic waste, from the upper discharge mouth (6) of the cylinder (3);
d) a dilution unit (8) positioned along the separation column (2) for supplying water or similar dilution liquid inside the cylinder (3);
e) a collection tube arranged below the separation column (2) for collecting organic matter from the separation column (2).
In a known manner, the discharge group (7) for extracting residues or objects from the upper discharge mouth (6) of the cylinder (3) independent of the organic matter present in the organic waste comprises:
-a discharge duct (9) connected at one end to the upper discharge opening (6) and provided at the other end with a discharge opening (10);
-a screw (11) coaxially arranged inside the discharge duct (9) and activated in rotation by a second motor (12) arranged in the vicinity of the discharge opening (10).
The axis of rotation of the screw (11) is arranged radially with respect to the cylinder (3) containing the blade shaft (4) (see fig. 3, 4).
In this case, the residues or objects not related to the organic matter present in the organic waste are conveyed into the discharge duct (9) by the centrifugal force exerted by the blade shaft (4) in a direction perpendicular to the peripheral speed direction of the residues or objects not related to the organic matter inside the cylindrical body (3).
This makes it difficult to extract through the discharge opening (7) and involves residues or objects not related to organic matter remaining inside the cylinder (3) for a long time, thus reducing the production capacity of the plant (100).
Further, it is difficult to extract the residue or object unrelated to the organic matter through the discharge port (7) requiring many unplanned maintenance operations.
Further, the vertical positioning of the duct (9) with respect to the circumferential speed direction determines a total reduction of the rotational speed of the organic waste inside the separation column (2), thus reducing the production capacity of the plant (100).
With regard to the screw (11), this arrangement of the relative rotation axis uses a blind-mandatory (i.e. with a closed head (90)) discharge duct (9) and an organic-matter-independent discharge opening (10) of residues or objects arranged at the side surface of the discharge duct (9).
Disclosure of Invention
The object of the present invention is to eliminate the above-mentioned disadvantages.
Another object of the invention is to facilitate the discharge of the first recycled components present in the waste product being treated from the cylinders of the separation column.
The above object is achieved by a waste treatment plant for separating recycled components according to claim 1.
The plurality of blades and the at least one plate advantageously ensure the formation of an ascending gas flow which tends to draw the first recycled component upwards and thus towards the upper part of the cylinder. At the same time, the arrangement of the discharge duct and the screw parallel to the tangential direction with respect to the cylinder facilitates the exit of the first recovered component from the cylinder of the separation column.
In other words, this arrangement of the discharge conduit allows a greater rotation speed of the waste inside the cylinder, and therefore the production capacity of the waste treatment plant is increased.
Further, the blades define an ascending path for the rejects that would otherwise be likely to risk falling towards the lower part of the cylinder due to the gravitational force to which they are subjected. Further, the plurality of blades reduce the reject to a smaller size during the ascent path to facilitate the separation process. During this ascending path, the second recycled component of the scrap is projected by centrifugal force towards the lateral surface of the cylinder.
The waste treatment plant can be advantageously used in the case where the waste is waste in a paper manufacturing process: in this case, it has been observed that the first recycled component comprises residues or objects unrelated to the cellulose pulp, the residues and objects exiting from the first discharge opening, while the second recycled component is the cellulose pulp exiting from the second discharge opening.
Further, the waste treatment plant can be advantageously used in the case where the waste is a package containing organic matter: in this case, it has been found that the first recycled component is the packaging exiting from the first discharge and the second recycled component is the organic exiting from the second discharge.
Such a waste treatment plant is therefore flexible and suitable for different operating configurations and different types of waste in the treatment plant inlet, ensuring a good separation capacity of the first recycled component and the second recycled component.
In general, hereinafter, the first recycled component is considered to be a homogeneous or heterogeneous fraction of the waste product, the components of which have a weight such as to be transportable upwards by the ascending gas flow. On the other hand, the second recycled component refers to a homogeneous or heterogeneous fraction of the waste product, the components of which have such a weight as to be projected towards the lateral surface of the cylinder under the effect of the centrifugal force.
In both cases, these are fractions of waste products that can be sent for recycling.
Drawings
The characteristics of the invention will be described in detail below with reference to the attached drawings, in particular with reference to some preferred but not exclusive embodiments, in which:
FIG. 1 is a plan view of an apparatus according to the prior art;
FIG. 2 is a view along section A-A indicated in FIG. 1;
FIG. 3 is an enlarged view of the separation column of FIG. 2;
FIG. 4 is a view along section B-B indicated in FIG. 3;
FIG. 5 is a view similar to FIG. 3 of a separation column of a waste treatment plant according to the invention;
FIG. 6 is a view along section C-C indicated in FIG. 5;
figures 7 and 8 are respective front and perspective views of a separating screw used in the waste treatment plant according to the invention;
fig. 9 is a view along section D-D indicated in fig. 7.
Detailed Description
With reference to the above figures, the reference numeral 1 indicates a waste treatment plant for separating the recovered components, which is the object of the present invention.
It is specified that the above definitions can be referred to by the first recovery component and the second recovery component.
Reference is now made to fig. 5 to 9.
A treatment plant (1) for separating recycled components for treating waste products, object of the present invention, comprises:
-a separation column (2), arranged substantially vertically, comprising: a cylindrical body (3) provided with a plurality of holes on its lateral surface and provided with an opening (5) below for supplying the waste to be treated; a blade shaft (4) coaxially positioned inside the cylindrical body (3) and rotated by activation of the first motor;
-a first upper discharge opening (6) arranged at the upper part of the cylindrical body (3) for discharging a first recycled component present in the waste to be treated, the first recycled component being separated and transported upwards by the blade shaft (4);
-a discharge group (7) for extracting a first recycled component present in the waste products from the cylinders (3) through a first upper discharge (6);
-the discharge group (7) comprises a discharge duct (9) connected to the first upper discharge opening (6);
-a second discharge opening arranged in the lower part of the cylinder (3) for discharging the second recovery component.
The vane shaft (4) inserted in the cylindrical body (3) of the separation column (2) comprises a first rotor (40) on the lateral surface of which a plurality of vanes (41) are fixed and oriented to define a discontinuous helical winding. Further, the blade shaft (4) comprises, near the upper end, at least one plate (45) fixed to a lateral surface of the first rotor (40) and arranged radially.
The above waste treatment plant (1) comprises: a screw (11) coaxially arranged inside the discharge duct (9) and rotated by activation of a second motor (12) to facilitate the extraction of the first recycled components present in the waste product from the cylinder (3) into the discharge duct (9); a dilution group (8) positioned along the separation column (2) for supplying water or similar dilution liquid inside the cylinder (3).
Further, the discharge duct (9) connected to the first upper discharge port (6) and the screw (11) are arranged parallel to the tangential direction with respect to the cylinder (3) (see fig. 5, 6).
This arrangement facilitates the extraction of the first recycled components present in the waste products from the cylinder (3) to the discharge duct (9).
At least one plate (45) comprises, at the free end of the at least one plate (45), a curved edge (46), the curved edge (46) being inclined so that, when the first rotor (40) is activated in rotation in a predetermined direction of activation of rotation, it is oriented according to the direction of activation of rotation to promote the extraction of the first recycled component present in the reject.
The curved edge (46) limits the accumulation of the first recycled component at the first upper discharge (6): this accumulation is caused by the following reasons.
During its upward transport, the first recycled component is also projected towards the wall of the cylinder (3) by the action of centrifugal force. At the upper end of the vane shaft (4), the first recycled component subjected to centrifugal force accumulates in the region identified by the inlet of the first upper discharge opening (6).
Once the curved edge (46) encounters the first recycled component subjected to centrifugal force, at the upper end of the blade shaft (4), the curved edge (46) advantageously throws the first recycled component inside the discharge duct (9) according to the advancing direction of the screw (11).
In other words, the curved edge (46) tends to modify the trajectory of the first recycled component to project it inside the discharge duct (9) along its advancing direction.
In detail, during the rotation of the blade shaft (4), when the curved edge (46) encounters the first recycled component projected towards the wall of the cylindrical body (3) due to the effect of the centrifugal force, which is located in the vicinity of the first upper discharge opening (6), the curved edge (46) imparts to the first recycled component a velocity component parallel to the discharge duct (9) and therefore parallel to the advancing direction of the screw (11). This facilitates the discharge of the first recycled component extracted from the cylinder (3) through the discharge opening (6). Further, due to the presence of the screw (11), the first recycled component is removed in an optimal way proceeding from the discharge (6) towards the outside of the treatment apparatus (1).
The curved edge (46) advantageously promotes the entry of the first recycled component near the first upper discharge opening (6) into the first upper discharge opening (6), preventing the first recycled component from being cyclically retained inside the cylindrical body (3) by the rotation of the blade shaft (4).
The cylinder (3) is preferably hollow (see fig. 5 and 6).
The opening (5) is preferably arranged in the lower part of the side surface of the cylinder (3).
The discharge conduit (9) preferably has a rectilinear extension (see fig. 5 and 6).
The discharge duct (9) is preferably arranged tangentially to the cylinder (3) at the first upper discharge opening (6) (see fig. 5 and 6).
The production capacity of the waste treatment plant (1) is increased due to the tangential arrangement of the discharge conduit (9) with respect to the cylindrical body (3), advantageously with a greater rotation speed. Facilitating the exit of the first recycled component.
The vane shaft (4) and the screw (11) are preferably reciprocally arranged in a phase relationship with each other so that, when the screw (11) and the vane shaft (4) are activated to rotate, the curved edge (46) of at least one plate (45) is arranged, when reaching the first upper discharge opening (6), in a free space comprised between two consecutive portions (11a, 11b) of the screw (11) at a pitch distance from each other.
In this way, for example, the screw (11) makes two forward rotations per rotation of the vane shaft (4), the distance of each rotation being equal to the screw pitch constituting the screw (11) itself.
Advantageously, at each rotation of the blade shaft (4), the quantity of the first recycled component to be extracted is halved (i.e. the portion of the first recycled component arranged at the upper part of the cylindrical body (3) and in the vicinity of the first upper discharge opening (6)), the flow rate of the first recycled component to be extracted being regulated to prevent clogging.
Each of the plurality of blades (41) may protrude about 20cm from a side surface of the first rotor (40) so as to be close to a side surface of the cylinder (3).
For example, the first rotor (40) may have a height of about 2 meters and an axial diameter of about 30 cm. The blades of the plurality of blades (41) may be positioned about 35cm from each other along a side surface of the first rotor (40).
Advantageously, the discontinuous helical winding of the plurality of blades (41) causes the rejects inside the cylinder (3) to be thrown from one tray to another of the plurality of blades (41).
The blade shaft (4) can be rotated by activation of the first rotor (40) such that the plurality of blades (41) and the at least one plate (45) form an ascending gas flow, thereby drawing the first recycled component upwards in the cylinder (3) and can create a centrifugal force that propels the second recycled component towards the side surfaces of the cylinder (3).
Referring to fig. 5, once the reject is fed through the opening (5) in the cylinder (3) of the separation column according to a direction perpendicular to the axis of the cylinder (3), the plurality of blades (41) lift the reject in the cylinder (3) upwards by rotation of the blade shaft (4). During the upward lift, a plurality of blades (41) reduce the waste into smaller sizes to facilitate separation between recycled components present in the waste. Inside the cylinder (3), the first recycled component is sucked upwards in the cylinder (3) by the ascending gas flow, while the second recycled component is projected under the centrifugal force towards a plurality of holes provided on the lateral surface of the cylinder (3) so that it can pass through the plurality of holes.
The cylindrical body (3) and the second discharge opening may be in fluid communication, so that the second recycled component is conveyed towards the second discharge opening once it has passed through the plurality of holes provided on the lateral surface of the cylindrical body (3).
The waste treatment plant (1) preferably comprises a chamber (48) surrounding the cylindrical body (3) and in fluid communication with the second discharge opening, so that the second recycled component passing through the plurality of holes provided on the lateral surface of the cylindrical body (3) is conveyed towards the second discharge opening.
At least one plate (45) preferably extends radially from the outer surface of the first rotor (40) and along a plane including the axis of the first rotor (40) (fig. 7 and 8).
The disposition and extension of the at least one plate (45) advantageously allows the ascending gas flow generated inside the cylinder (3) to have a greater upward suction force on the first recycled component. In other words, a greater suction of the first recycled component is generated in an upward direction towards the discharge conduit (9).
The cylindrical body (3) preferably comprises a covering element (47) fixed to the upper end of the blade shaft (4) and oriented perpendicularly to the axis of the first rotor (40). The at least one plate (45) and the covering element (47) are close to or in contact with each other (see fig. 7 and 8).
The covering element (47) is preferably a circular plate. The covering element (47) may have a diameter of about 62 cm.
The covering element (47) can advantageously enclose the cylinder (3).
The covering element (47) advantageously acts as an abutment for the first recycled component which is separated and transported upwards.
The discharge duct (9) comprises a lateral surface (95) and two heads (96, 97), the lateral surface (95) possibly comprising an opening connected to the first upper discharge opening (6) (see fig. 5 and 6).
Advantageously, a second motor (12) for activating the screw (11) is arranged at the first head (97) of the discharge duct (9) and is activated to facilitate the extraction of the first recycled components present in the waste product from the cylinder (3) to the discharge duct (9).
A second motor (12) for activating the screw (11) is arranged outside the cylinder (3) in the vicinity of the separation column (2).
The second head (96) of the discharge duct (9) is advantageously open to enable longitudinal discharge of the first recycled component present in the waste product.
This makes it possible to facilitate the discharge of the first recycled component from the discharge conduit (9) through the open second head (96).
In this way, tangling of the first recycled component on the screw (11) is avoided, limiting the need for unscheduled maintenance interventions.
The plurality of blades (41) may advantageously be fixed to the lateral surface of the first rotor (40) by welding.
This makes it possible to limit the contact surface of the blade shaft (4) with the waste to be treated, thus reducing the wear to which the plurality of blades (41) are subjected.
Welding the plurality of blades (41) to the side surface of the first rotor (40) further enables the possibility of breakage and separation of each of the plurality of blades (41) to be greatly reduced, thereby protecting the internal components of the waste disposal apparatus (1).
For example, the vane shaft (4) may comprise, near the upper end, a pair of opposite plates (45) fixed to the lateral surface of the first rotor (40) and arranged radially (see fig. 9).
A pair of plates (45) preferably extend radially from the outer surface of the first rotor (40) and extend along a plane that includes the axis of the first rotor (40). Like the blade shaft (4), the screw (11) inserted in the discharge duct (9) of the discharge group (7) may also comprise a second rotor (110) on the lateral surface of which a plurality of helical elements (115) are fixed, having the geometry and pitch necessary to promote the extraction of the first recovery component present in the waste.
In the same manner, the screw member (115) may be fixed to a side surface of the second rotor (110) by welding.
In the following, waste is considered to be waste from the production of paper. At the end of the papermaking process, waste products are produced that include cellulose pulp and objects unrelated to the cellulose pulp, such as, for example, polyethylene, coarse materials, chips and filaments of fabrics or other materials, wood, iron and aluminum. In particular, the above waste products are called "paper pulper waste" and are currently sent for removal.
However, a certain amount of cellulose pulp can be recovered from the waste product for reuse in the paper making cycle.
As mentioned above, the invention relates to the use of a waste treatment plant (1), wherein the waste is waste from a paper making process, the first recycled component consists of residues or objects not related to cellulose pulp, and the second recycled component is cellulose pulp.
The cellulose paste separated from the waste of the paper making process may be chemical cellulose pulp or semi-chemical cellulose pulp or mechanical and cellulose pulp as the second recovery component.
In the paper making process, different types of cellulose pulp can be used. In replenishing the waste produced in a papermaking process, the same type of cellulose pulp originally used in the same papermaking process is found.
Further, as mentioned above, the invention relates to the use of a waste treatment plant (1), wherein the waste is a package containing organic matter, the first recycled component is the package, and the second recycled component is the organic matter.
The organic matter separated from the package containing the organic matter is mostly homogeneous organic matter as a second recovery component, and the percentage of residue or objects unrelated to the organic matter is very low and can be sent directly for recovery or rehabilitation.
In case the waste is waste from a paper making process, a waste treatment plant (1) for separating recycled components is described.
The waste from the paper making process is fed to the processing equipment through openings (5) arranged on the side surface of the cylinder (3), whereby the waste from the paper making process is fed in a direction perpendicular to the axis of the cylinder (3). At the same time, the dilution group (8) is activated to supply water inside the cylinder (3). Once the first rotor (40) is activated to rotate, blades of the plurality of blades (41), in particular blades arranged on the underside of the first rotor (40), tend to transport the fed paper-making process waste upwards. Further, a plurality of vanes (41) reduce the waste of the paper process to a smaller size to facilitate separation between the recycled components. At this point, the plurality of blades (41) and the at least one plate (45) form an updraft that draws residues or objects, which are not related to the cellulose pulp, upwards in the cylinder (3). Thus, residues or objects not related to the cellulose pulp are sucked towards the first upper discharge opening (6). On the contrary, due to the operation of the plurality of blades (41), the cellulose pulp and the water are subjected to a centrifugal force in the rising path, which propels the cellulose pulp and the water towards a plurality of holes arranged on the side surface of the cylinder (3) for transport via the chamber (48) towards the second discharge opening.
Likewise, the same operation is performed in the case where the waste product is a package containing organic matter. In contrast to the foregoing, once the first rotor (40) is activated to rotate, the vanes of the plurality of vanes (41) disposed under the first rotor (40) may break the packages containing the organic matter, thereby separating the packages from the contained organic matter.
Based on the above, it is clear that the waste treatment plant (1) is capable of facilitating the discharge of the first recycled components present in the waste to be treated, such as residues or objects unrelated to the cellulose pulp to be recycled or organic matter to be recycled, from the cylinder (3) of the separation column (2).
Further, the waste treatment apparatus (1) for separating recycled components of the present invention is capable of significantly limiting the waiting time of the first recycled components present in the waste inside the cylinder (3).
Further, the separation between the organic matter and the package is facilitated due to the increased speed experienced by the package containing the organic matter in centrifugal motion.
This is mainly due to the discharge duct (9) connected to the first upper discharge opening (6) and the screw (11) arranged substantially tangentially with respect to the cylindrical body (3) of the separation column (2).
The waste treatment plant (1) is further capable of accelerating the discharge of the first recycled components present in the waste from the discharge conduit (9).
This is due to the fact that the second motor (12) of the screw (11) is arranged at the first head (97) of the discharge conduit (9), in the vicinity of the separation column (2), outside the cylindrical body (3).
In this case, the second head (96) of the discharge duct (9) can advantageously be of the open type, so as to enable longitudinal discharge of the first recycled component present in the waste product, thus greatly limiting the entanglement phenomenon of the first recycled component on the screw (11).
Thus, unscheduled maintenance operations are greatly reduced.
The fixation by welding the plurality of blades (41) to the side surface of the first rotor (40) enables to limit the contact surface between the blade shaft (4) and the waste to be treated, thus reducing the wear to which the plurality of blades (41) are subjected.
This further enables the possibility of breakage and separation of each of the plurality of blades (41) to be greatly reduced, thereby protecting the internal components of the waste disposal apparatus (1).
Claims (13)
1. A waste treatment plant (1) for separating recycled components, comprising:
-a separation column (2), arranged substantially vertically, comprising: a cylindrical body (3) provided with a plurality of holes on its lateral surface and provided with an opening (5) below for supplying the waste to be treated; a blade shaft (4) rotated by activation of a first motor and positioned coaxially inside the cylindrical body (3);
-a first upper discharge opening (6) arranged at the upper part of the cylindrical body (3) for discharging a first recycled component present in the waste to be treated, which is separated and transported upwards by the blade shaft (4);
-a discharge group (7) for extracting the first recycled components present in waste from the cylinders (3) through the first upper discharge mouth (6);
-said discharge group (7) comprises a discharge duct (9) connected to said first upper discharge opening (6);
-a second discharge opening arranged in the lower part of the cylinder (3) for discharging a second recovery component;
wherein the blade shaft (4) inserted in the cylindrical body (3) of the separation column (2) comprises a first rotor (40) on the lateral surface of which a plurality of blades (41) are fixed and oriented to define a discontinuous helical winding;
wherein the blade shaft (4) comprises, near the upper end, at least one plate (45) fixed to a lateral surface of the first rotor (40) and arranged radially;
the waste treatment plant (1) is characterized in that it comprises: a screw (11) coaxially arranged inside the discharge duct (9) and rotated by activation of a second motor (12) to facilitate the extraction of the first recycled components present in the waste products from the cylinder (3) into the discharge duct (9); a dilution group (8) positioned along the separation column (2) for supplying water or similar dilution liquid inside the cylindrical body (3);
and the discharge duct (9) connected to the first upper discharge outlet (6) and the screw (11) are arranged parallel to the tangential direction with respect to the cylinder (3) to facilitate the extraction of the first recycled components present in the waste products from the cylinder (3) to the discharge duct (9);
and at least one plate (45) comprises, at a free end of said at least one plate (45), a curved edge (46), said curved edge (46) being inclined so that, when said first rotor (40) is activated in rotation in a predetermined direction of rotational activation, said curved edge (46) is oriented according to the direction of rotational activation to facilitate extraction of said first recycled component present in the waste.
2. Waste treatment plant (1) according to claim 1, characterized in that said discharge conduit (9) has a rectilinear extension.
3. Waste treatment plant (1) according to any one of the preceding claims, characterized in that said discharge duct (9) is arranged tangentially to said cylindrical body (3) at said first upper discharge opening (6).
4. Waste treatment plant (1) according to the preceding claim, characterized in that said vane shaft (4) and said screw (11) are reciprocally arranged and activated in a phase relationship with each other so that, when said screw (11) and said vane shaft (4) are activated to rotate, the curved edge (46) of said at least one plate (45) is arranged, when reaching said first upper discharge outlet (6), in the free space comprised between two consecutive portions (11a, 11b) of said screw (11) which are at a pitch from each other.
5. The plant (1) for the treatment of waste according to any one of the preceding claims, characterized in that it comprises a chamber (48) surrounding the cylindrical body (3), said chamber being in fluid communication with the second discharge opening so that the second recycled component passing through a plurality of holes provided on the lateral surface of the cylindrical body (3) is conveyed towards the second discharge opening.
6. Waste treatment plant (1) according to any one of the preceding claims, characterized in that said at least one plate (45) extends radially from the outer surface of said first rotor (40) and along a plane comprising the axis of said first rotor (40).
7. The apparatus (1) for treating waste according to any one of the preceding claims, characterized in that the cylindrical body (3) comprises a covering element (47) fixed to the upper end of the blade shaft (4) and oriented perpendicularly to the axis of the first rotor (40); the at least one plate (45) and the covering element (47) are close to or in contact with each other.
8. The plant (1) for the treatment of waste according to any one of the preceding claims, characterized in that the discharge conduit (9) comprises a lateral surface (95) and two heads (96, 97); -the lateral surface (95) of the discharge duct (9) comprises an opening connected to the first upper discharge opening (6); the second motor (12) for activating the screw (11) is arranged at a first head (97) of the discharge duct (9) and is activated to facilitate the extraction of the first recycled components present in the waste from the cylinder (3) to the discharge duct (9); the second head (96) of the discharge conduit (9) is open to enable longitudinal discharge of the first recycled component present in the waste product.
9. Waste treatment plant (1) according to any one of the preceding claims, characterized in that said blade shaft (4) comprises, near an upper end, a pair of opposite plates (45) fixed to the lateral surface of said first rotor (40) and arranged radially.
10. The plant (1) for treating waste according to any one of the preceding claims, characterized in that said pair of plates (45) extends radially from the outer surface of said first rotor (40) and along a plane comprising the axis of said first rotor (40).
11. Waste treatment plant (1) according to any one of the preceding claims, characterized in that said screw (11) inserted in the discharge conduit (9) of the discharge group (7) comprises a second rotor (110) on the lateral surface of which a plurality of helical elements (115) are fixed, having the geometry and pitch necessary to promote the extraction of the first recycled component present in the waste.
12. Use of a waste treatment plant (1) according to any of the preceding claims, wherein the waste is waste from a paper making process, wherein the first recycled component consists of residues or objects unrelated to cellulose pulp, wherein the second recycled component is cellulose pulp.
13. Use of a waste treatment plant (1) according to any of the preceding claims, wherein the waste is a package containing organic matter, wherein the first recycled component is a package, wherein the second recycled component is organic matter.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102017000084595 | 2017-07-25 | ||
| IT102017000084595A IT201700084595A1 (en) | 2017-07-25 | 2017-07-25 | APPARATUS FOR THE SELECTION OF ORGANIC WASTE |
| IT102017000138762 | 2017-12-01 | ||
| IT201700138762 | 2017-12-01 | ||
| PCT/IB2018/055551 WO2019021211A1 (en) | 2017-07-25 | 2018-07-25 | A treatment apparatus of a waste product for separating recycling fractions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111093845A true CN111093845A (en) | 2020-05-01 |
Family
ID=63407486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880059490.9A Pending CN111093845A (en) | 2017-07-25 | 2018-07-25 | Waste treatment plant for separating recycled components |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US11260398B2 (en) |
| EP (1) | EP3658300B1 (en) |
| JP (1) | JP7189630B2 (en) |
| KR (1) | KR20200035273A (en) |
| CN (1) | CN111093845A (en) |
| AU (1) | AU2018306141B2 (en) |
| CA (1) | CA3072818A1 (en) |
| DK (1) | DK3658300T3 (en) |
| ES (1) | ES2858530T3 (en) |
| HR (1) | HRP20210335T1 (en) |
| HU (1) | HUE054398T2 (en) |
| IL (1) | IL272185B2 (en) |
| LT (1) | LT3658300T (en) |
| PL (1) | PL3658300T3 (en) |
| PT (1) | PT3658300T (en) |
| RU (1) | RU2770407C2 (en) |
| SI (1) | SI3658300T1 (en) |
| WO (1) | WO2019021211A1 (en) |
| ZA (1) | ZA202001045B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900012642A1 (en) * | 2019-07-23 | 2021-01-23 | Cesaro Mac Imp S R L | SEPARATION APPARATUS TO SEPARATE CONTAMINANT FRACTIONS FROM A LIQUID FLOW INCLUDING A HETEROGENEOUS MIXTURE |
| CN113061736B (en) * | 2021-03-30 | 2022-03-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for separating potassium, lead and iron from sintering machine head ash |
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- 2018-07-25 LT LTEP18762137.0T patent/LT3658300T/en unknown
- 2018-07-25 PL PL18762137T patent/PL3658300T3/en unknown
- 2018-07-25 PT PT187621370T patent/PT3658300T/en unknown
- 2018-07-25 KR KR1020207004297A patent/KR20200035273A/en not_active Application Discontinuation
- 2018-07-25 CN CN201880059490.9A patent/CN111093845A/en active Pending
- 2018-07-25 US US16/632,712 patent/US11260398B2/en active Active
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- 2018-07-25 HU HUE18762137A patent/HUE054398T2/en unknown
- 2018-07-25 DK DK18762137.0T patent/DK3658300T3/en active
- 2018-07-25 ES ES18762137T patent/ES2858530T3/en active Active
- 2018-07-25 JP JP2020504180A patent/JP7189630B2/en active Active
- 2018-07-25 RU RU2020107310A patent/RU2770407C2/en active
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- 2018-07-25 CA CA3072818A patent/CA3072818A1/en active Pending
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Also Published As
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|---|---|
| AU2018306141B2 (en) | 2024-04-04 |
| HRP20210335T1 (en) | 2021-04-02 |
| CA3072818A1 (en) | 2019-01-31 |
| IL272185A (en) | 2020-03-31 |
| RU2770407C2 (en) | 2022-04-15 |
| EP3658300B1 (en) | 2020-12-02 |
| DK3658300T3 (en) | 2021-03-08 |
| KR20200035273A (en) | 2020-04-02 |
| JP2020530381A (en) | 2020-10-22 |
| PT3658300T (en) | 2021-03-08 |
| US20200368756A1 (en) | 2020-11-26 |
| SI3658300T1 (en) | 2021-04-30 |
| BR112020001665A2 (en) | 2020-07-21 |
| US11260398B2 (en) | 2022-03-01 |
| AU2018306141A1 (en) | 2020-02-27 |
| IL272185B1 (en) | 2023-11-01 |
| HUE054398T2 (en) | 2021-08-30 |
| RU2020107310A3 (en) | 2021-10-29 |
| ZA202001045B (en) | 2021-04-28 |
| PL3658300T3 (en) | 2021-07-12 |
| RU2020107310A (en) | 2021-08-25 |
| LT3658300T (en) | 2021-03-25 |
| EP3658300A1 (en) | 2020-06-03 |
| JP7189630B2 (en) | 2022-12-14 |
| IL272185B2 (en) | 2024-03-01 |
| WO2019021211A1 (en) | 2019-01-31 |
| ES2858530T3 (en) | 2021-09-30 |
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